It is not wrong to use Comic Sans. You must know when to use it. And when not.
Your typeface says a lot about how much you care for your content. A well-written copy, without the disguise of an appropriate typeface, is like the king without his rope – indistinctive. Here is a simple compilation on the basics of typography:
Infographic by Noodlor. Image source: KarbelMultimedia.com
Periodic Table of Typeface